Road-grader



C SPETH.

ROAD GRADER. APPLICATION FILED Jun 24, m9.

1,339,866. Patented Mayll, 1920.

2 SHEETS-SHEET L APPLICATION FILED JULY 24,1919.

c. SPETH. ROAD GRADER.-

mm May 11,1920.

2 SHEETS-SHEET 2.

CHARLIE SPETH, OF PALMYRA, NEBRASKA.

ROAD-GRADER. I

Application filed July 24, 1919.

To all whom it may concern:

Be it known that I, CHARLIE SPETH, a citizen of the United States,residing at Palmyra, in the county of Otoe, State of Nebraska, haveinvented certain new and useful Improvements in Road-Graders; and dohereby declare the following to be a full, clear, and exact descriptionof the nvention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to road graders and it has for its object toprovide a structure of the rotary conveyer disk type wherein during theadvance of the grader, the dirt may be discharged at any desired pointof the periphery of the disk, within certain llmlts thus to adjust theapparatus to road-ways of difierent widths and to the difierent specificconditions under which it is used.

A further object of the invention is to provide a grading machineembodying an extremely simple yet effective means for adjusting thedepth of cut of the plow and also to provide a general frame structurethat will be not only efhcient but very cheap of manufacture andentirely durable.

Reference is had to the accompanying drawings forming a part of thisapplication, wherein like characters designate corresponding partsthroughout the several views, in which Figure 1 is a plan view of myimproved road grader,

Fig. 2 is an edge view showing the position of the device during theinitial use thereof,

Fig. 3 is an edge view at right angles to Fig. 2 showing the completedwork, and

Fig 1 is a cross section.

Referring to the drawings in detail, my improved road grader is shown asembodying a relatively large disk 10 preferably made up of a series ofboards 11 crossed at right angles and suitably secured or nailedtogether so as to produce a rigld structure not likely to warp. Thisdisk is provided with top and bottom reinforcing bands or rings 12preferably in the form of an iron rim securely riveted to the boards,although it is to be understood that the disk may be constructed of anyother desired material.

Disposed vertically through the axis of the disk is a shaft 13 to whichis connected the free ends of the upper and lower forks of a beam 1 1,the outer end of which is re- Specification of Letters Patent.

Patented May 11, 1920.

Serial No. 313,068.

duced in thickness and has pivotally connected thereto a wheeled draftframe 15 which is turnable on the king bolt 16 so thatv is disposed incontact with the under edge 3 portion of the disk so that, the disk willbe supported to revolve thereon or to permit said wheel to revolvetherebeneath the animals are driven to encircle the disk. The axle 18 isbraced to the beam 14 by a brace rod 20.

Arranged upon the beam 14 is a seat 21 for the driver and pivotallysecured to the shaft 13 is a radially extending plow beam 22 carrying asingle mold board plow 23 at its free end so as to extend beneath thedisk with its concaved face disposed inwardly'so as to excavate the dirtand throw the same upon the disk as the apparatus progresses or the plowis caused to revolve or travel around the disk. A brace 24 is arrangedbetween the beam 1% and the free end of the plow beam 22.

A gage wheel 25 operates in advance of the plow and is journaled uponthe laterally directed end 26 of a bell crank lever 27 pivotally mountedin bearings 28 on the plow beam 22, the other end of the leverconstitutes a handle 29 which extends in convenient position above thedraft beam 14. for manipulation by the occupant of the drivers seat.This handle is designed for engagement with a notched standard 30 sothat the gage wheel may be raised or lowered to regulate the depth ofaction of the plow in the ground.

Also mounted on the shaft 13 pivotally is a radial beam or arm 31 whichcarries at the rear side of its free end a scraping blade 32. This bladeextends at an acute angle rearwardly from the beam 31 with its outer endprojecting slightly beyond the periphery of the disk 10 while its otherend extends inwardly of the disk. Thus as the apparatus advances, andthe disk rotates by reason of its lower edge portion touching theground, the dirt on the disk delivered to it by the plow, comes incontact with this scraper blade and by it is shoved off from the edge ofthe disk. It will of course be understood that as illustrated, the wheel19 holds the disk at an angle to the horizontal so that the oppositeedge portion runs upon the ground to rotate the disk. It will be furtherunderstood that with the apparatus standing still, the team may bedriven aroundthe disk, which will serve to carry the scrape-rsary toadjust the scraping blade angular-1y of the disk and this isaccomplished through the medium of a connecting rod 33" which is pivotedto the beam 14; at the point of connectionof the brace 24, and whichconnecting rod is provided with a longitudinal series'of openings 8% atits rear end portion,

to interchangeably receive a pin 85 that extends upwardly from the arm31. By shifting the pin to one hole or another of the rod 33, it will ofcourse be understood that the arm 31 will be held at correspondingangles to the direction of advancement of the apparatus.

WVhat is claimed is:

A'road grader comprising an inclined rotatable disk, a forked draft beamstraddling the disk and connected to the shaft, an axle connected withthe beam at the under side ofthe disk and having a ground wheel uponwhich the higher side of the disk rests, a plow disposed to deliverdirtupon the disk andhaving a beam connected with said shaft, ana'djustabl'ega'ge wheelfor the pl'ow' supported from the beam, an armpivoted to the disk shaft and extending axially of the disk, and a bladecarried'by the arm in position to scrape dirt from the disk, the armbeing adjustable an'gularly of the disk.

In testimony whereofI aifix my signature in the presence of twowitnesses.

CHARLIE SPETH. Witnesses:

HARRY SLossoN, W. E. VAUGHAN.

